Even feed grease reservoir



D.1s,1925. 1,565,818 L. R. SIROIS EVEN FEED GREASE RESERVOIR Filed March 15, V1925 amn' Patented Dec. 15, 1925.

PATENT OFFICE.

LOUIS R. SIROIS, OF PORTLAND, MAINE.

EVEN FEED GREASE RESERVOIR.

Application led March 13, 1925.

To all whom it may concern.'

Be it known that I, Louis R. SIRoIs, a citi- Zen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented ycertain new and useful Improvements in an Even Feed Grease Reservoir, of which the following is a specification.

The present invention relates to a grease reservoir and has for its principal object to provide means for feeding the grease therefrom at a constant rate at all times.

. Another important object of the invention is to provide a grease reservoir structure wherein a container is provided with a spring actuated follower and a valve which is opened as the tension or force of the spring' becomes less as the -container is emptying.

A further general object of the invention is to provide a device of this nature with a simple structure which will prove eticient and reliable in operation, one which may be manufactured at a comparatively low cost and yet be strong, durable, not liable to readily get out. of order, easy to lill, and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing Figure 1 is a vertical longitudinal section through the device embodying my invention.

Figure 2 is a section through the valve thereof,

Figure 3 is a detail sectional view one of the cam supports, and

Figure 4 is a detail view showing one of the cams for operation of the valve.

Referring to the drawings in detail it will be seen that 1 designates a container having its top closed by a screw cap 2. The bottom of the container is provided with screw threaded opening for receiving the valve casing 3. A transverse opening 4 is provided in the side of the container adjacent the bottom for receiving the lower end of an upstanding pipe 5 having a check valve structure 6 therein. The upper end of this pipe 5 may be closed by a suitable cap 7. This pipe 5 is used for filling purposes as showing Serial N'o. 15,277.

will be brought out more clearly hereinafter. A follower 8 is slidable in the container 1 and is urged downward toward the bottom thereof by a spring 9. This spring 9 is of the coiled type and has one end impinging against the cap 2 and the other against the follower 8. A washer 10 is mounted on the under face of the follower 8 so as to prevent leakage between the edge thereof and the inner surface of the container 1. Rods 11 are attached to the follower 8 and project through openings 12 in the cap 2. Arms 13 are slotted as at 14 for receiving pins 15 at the upper ends ofthe rods 11. Balls 16 are formed on the ends of the arms 13 and have oflcenter dentures 17 provided therein for receiving trunnions 18 and 19 carried by the brackets 20. The trunnions 19 are threadedly engaged in the brackets 2O so that the balls 16 may be readily engaged and disengaged. The arms 13 will rock the balls 16 and because of their ofi:1 center mounting it will be seen that they will act as cams.

A valve seat 21 is mounted in the valve casing 3, and a valve 22 is slidable in this casing for seating against the seat 21. This valve 22 is provided with a diagonally arranged opening in its end as at 23. The upper end of the valve 22 is reduced and threaded as at 24. A stem 25 threadedly engages the reduced portion 24 and extends slidably through the follower S and through the cap 2 terminating in a kno-b 26 having an annular groove 27 therein. The balls 16 are mounted in this annular groove 27. A cover 29 is threadedly engaged with the cap 2 and covers the parts tnereabove.

Vhen it is desired to fill the container after ithas been emptied, it will be seen that the follower 8 is resting on a cross member 30 which projects through a slot 31 in the valve 22 to prevent turning of the valve. A grease gun or the like is engaged with the end of pipe 5 and the knob 26 turned in a counter-clockwise direction so as to move the valve 22 away from the stem 25 so as to close it against the seat 21. By operation of the grease gun the grease will lill the container` 1 under the follower 8 raising the latter so as to compress the spring 9. The grease reservoir is now ready for operation and by turning the knob 26 in a clockwise direction the valve may be opened the sufiicient degree so that the follower will force the grease therethrough. As this follower moves downwardly in the container the spring 9 will lose of its tension and therefore provide means for opening the valve slightly so as to compensate for this loss oit tension ot' the s iring so that an even tloiv of grease will proceed through the valve. rlhis means includes the rods ll, arms 13, and the halls 1G. Bis the rods il move downwardly with the ollovver S the balls or cams 1G Will rotate in the grooves 2? from the position as shovvn in Figure et and ivill therefore raise the knob :267 the stem and the valve Q2 so as to enlarge the opening therethrough. ln other Words the further the follower S moves downvfardl)r in the container l the opening Will heeonie larger in the valve, thereby compensating for the loss et tension in the spring 9 so as to maintain an even flow of grease 'trom the eontainer. Y

From tl e above it vvill he apparent that l have devised a grease cup or reservoir which will anton'iatieally,7 operate to feed an even amount o grease to the bearing or other part with whieh it is associated no matter how mneh grof-rse may he Contained therein. rThe present einhodin'ient oi the invention has been disclosed inerelj,7 by wav of example and attains all the features of advantage enumerated as desirable in the statement ot the invention and the ahove description, but it is desired to point ont that numerous changes in the details of Construction and the Combination and arrangement o' parts may he resorted to witaout departing; from the spirit or scope of the invention as hereinafter claimed r saeriiieing any of its advantages.

llavinpl thus deserihed the invention, what l claim is l. ln agrease reservoir, a spring actuated discharge follower7 a valve, a stem for operation ot the valve having an annular groove its top and passingthrough the follower, a cam rotatahle in the groove for liftinr the stein ai d opening the valve, and means operatively connected to said follower. and to said @am ivhereh)Y the 'follower will control the valve so that said valve will he open to a gr atei, extent as the spring loses its tension.

In a grease reservoir. a discharge folloiver, a spri Jor operation of the follevier. a valve for controlling the dis-charge ot gie stein eonroin the container, a neeted 'to the valve said stein being provided ivith an annular groove, a earn rotatable in the annular .groove7 an arm Ytor operation ot the @ann a rod extending` from the follower. and a pin and slot Connection hetween the arm and rod.

3. in a reseivein a discharge Ytolloiver, spring for operation ot tl e follower` a valve for controlling1 the discharge ot grease trom the container7 a stem Connected to the valve, said stein provided with an annular groove a @am rotatable in the annular groove? an arm lor operation ol? the eann a rod extending Vfrom the follower, and a pin and slot Connection between the arin and rod, said valve having` a threaded extension for engaging`r` said stem so that by rotation of the stein said valve may be closed.

ln testimonyv vvhereoi` l atir: inv signature.

LOUS R. SIR ES. 

